28325743 has 4 divisors (see below), whose sum is σ = 28428280. Its totient is φ = 28223208.

The previous prime is 28325729. The next prime is 28325747. The reversal of 28325743 is 34752382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28325743 - 2¹³ = 28317551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28325699 and 28325708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28325747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50853 + ... + 51406.

It is an arithmetic number, because the mean of its divisors is an integer number (7107070).

Almost surely, 2^28325743 is an apocalyptic number.

28325743 is a deficient number, since it is larger than the sum of its proper divisors (102537).

28325743 is a wasteful number, since it uses less digits than its factorization.

28325743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102536.

The product of its digits is 40320, while the sum is 34.

The square root of 28325743 is about 5322.1934387995. The cubic root of 28325743 is about 304.8319167040.

The spelling of 28325743 in words is "twenty-eight million, three hundred twenty-five thousand, seven hundred forty-three".